{"id":706,"date":"2026-07-01T06:10:41","date_gmt":"2026-07-01T10:10:41","guid":{"rendered":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-chevrolet-silverado-1500-pickup-3-0l-6-cyl-diesel-turbo-maintenance-guide\/"},"modified":"2026-07-01T06:10:41","modified_gmt":"2026-07-01T10:10:41","slug":"2021-chevrolet-silverado-1500-pickup-3-0l-6-cyl-diesel-turbo-maintenance-guide","status":"publish","type":"post","link":"https:\/\/www.worldsbestdieseloil.com\/oil-guide\/2021-chevrolet-silverado-1500-pickup-3-0l-6-cyl-diesel-turbo-maintenance-guide\/","title":{"rendered":"2021 Chevrolet Silverado 1500 3.0L LM2 T Diesel Maintenance Guide"},"content":{"rendered":"
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\"AMSOIL
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines<\/figcaption><\/figure>\n

What oil does a 2021 Chevrolet Silverado 1500 3.0L Diesel take?<\/h2>\n

The 2021 Chevrolet Silverado 1500 with the 3.0L 6-cylinder LM2 T Diesel engine requires a 0W-20<\/strong> viscosity oil. For a standard oil change including the filter, the capacity is 7 quarts<\/strong>. AMSOIL recommends using AMSOIL 0W-20 100% Synthetic Diesel Oil<\/a> (Code: DP020QT-EA<\/a>) paired with a WIX oil filter<\/a> for optimal protection.<\/p>\n

AMSOIL product recommendations<\/h2>\n

Based on the AMSOIL lookup for the 3.0L LM2 T Diesel engine, the following products are recommended for your maintenance needs:<\/p>\n

Engine Oil & Filter<\/h3>\n
\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL 0W-20 100% Synthetic Diesel Oil<\/td>\nDP020QT-EA<\/a><\/td>\n<\/tr>\n
WIX Oil Filter<\/td>\nWL10351-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Automatic Transmission & Transfer Case<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Signature Series ULV 100% Synthetic ATF<\/td>\nULVPK-EA<\/a><\/td>\n<\/tr>\n
AMSOIL OE Fuel-Efficient 100% Synthetic ATF<\/td>\nOTLQT-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Signature Series Fuel-Efficient ATF<\/td>\nATLPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Coolant & Gear Lubricants<\/h3>\n
\n\n\n\n\n\n
Product Name<\/th>\nPart Code<\/th>\n<\/tr>\n
AMSOIL Passenger Car & Light Truck Antifreeze<\/td>\nANTPC1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL Propylene Glycol Antifreeze<\/td>\nANT1G-EA<\/a><\/td>\n<\/tr>\n
AMSOIL SEVERE GEAR\u00ae 75W-85 Synthetic Gear Lube<\/td>\nSVLPK-EA<\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Engine Oil Specifications & Details<\/h2>\n

Proper lubrication is critical for the LM2 Turbo Diesel engine to manage heat and wear. Always verify your specific requirements against the owner’s manual.<\/p>\n

Oil Viscosity and Grade<\/h3>\n
\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
AMSOIL lookup oil grade<\/td>\nSEOA5<\/td>\n<\/tr>\n
Viscosity (All Temps)<\/td>\n0W-20<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Oil Capacity & Torque Specs<\/h3>\n
\n\n\n\n\n
Component<\/th>\nCapacity \/ Torque<\/th>\n<\/tr>\n
Engine Oil Capacity (with filter)<\/td>\n7 quarts<\/td>\n<\/tr>\n
Oil Drain Plug Torque<\/td>\n18 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note:<\/strong> Replace the drain plug seal during service. After refilling, always check the oil level.<\/p>\n

OEM Compatibility Notes<\/h3>\n

The AMSOIL lookup note states that vehicles equipped with Diesel engines that originally used GM Dexos2 may use a GM Dexos D licensed engine oil of the appropriate viscosity grade.<\/p>\n

Transmission & Transfer Case Fluid Data<\/h2>\n

This vehicle utilizes specific transmission requirements for the 10-speed automatic system (10L80).<\/p>\n

Automatic Transmission Capacity<\/h3>\n
\n\n\n\n\n\n
Configuration<\/th>\nTotal Fill Capacity<\/th>\n<\/tr>\n
10 speed with Cooler (10L80)<\/td>\n12 quarts<\/td>\n<\/tr>\n
10 speed with Oil Cooler (10L80)<\/td>\n11.6 quarts<\/td>\n<\/tr>\n
Initial Fill<\/td>\n8.1 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

The AMSOIL lookup note references the WSS-M2C949-A specification, which was developed by Ford and GM. Products meeting this specification are available under DEXRON ULV and MERCON ULV tradenames.<\/p>\n

Transfer Case Lubricant<\/h3>\n
\n\n\n\n\n\n
Specification<\/th>\nValue<\/th>\n<\/tr>\n
Capacity (MP3015, 25)<\/td>\n3.2 pints<\/td>\n<\/tr>\n
Transfer Case Drain Plug Torque<\/td>\n15 ft\/lbs<\/td>\n<\/tr>\n
Transfer Case Fill Plug Torque<\/td>\n15 ft\/lbs<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

Note:<\/strong> Identification should be done by checking the tag on the case.<\/p>\n

Coolant Specifications<\/h2>\n
\n\n\n\n
Component<\/th>\nCapacity<\/th>\n<\/tr>\n
Engine Coolant<\/td>\n20.5 quarts<\/td>\n<\/tr>\n<\/table>\n<\/div>\n

AMSOIL offers both a 50\/50 pre-mix (ANTPC1G-EA<\/a>) and a concentrated Propylene Glycol option (ANT1G-EA<\/a>) which requires mixing with distilled or high-quality water.<\/p>\n

Diesel maintenance notes for this vehicle<\/h2>\n

Because the 3.0L LM2 is a turbocharged diesel engine, maintenance protocols differ from gasoline variants. Owners should prioritize:<\/p>\n